Lubricating-bolt.



J. BUSKENS. LUBRIGATING BOLT.

APPLIUATION FILED 11017.24, 1913.

1,124,588. Patented Jan. 12,1915.

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JOSEPH BSKENS, OF VILVORDE, BELGIUM.

LUBRICATING-BOLT.

Application iiled November 24, 1913.

To all whom t may concern Be it known that I, JOSEPH BsKnNs, a subject of the German Emperor, and resident of Vilvorde, Belgium, have invented certain new and useful Improvements in Lubricating-Bolts, of which the following is a specilication.

This invention relates to improvements in a lubricating device.

The invention comprehends a cup formed with a grease outlet, and a cap which slides on the cup, a spring being interposed between the cup and cap, means being provided to engage between the coils of the spring to cause the cap when rotated to slide on the cup and expel the grease.

The object of the invention is to provide simple and inexpensive means for securely holding the cap in position on the cup, and yet permit of the cap being rotated.

The invention also comprehends improvements in the construction and arrangement of parts which will be hereinafter described and particularly pointed out in the claims.

In the drawing: Figure 1 is a view partly in elevation and section of my invention. Fig. 2 is a similar View of a modified form of the invention. Fig. 3 is a similar view of a further embodiment of the invention.

The improvement is shown in connection with a bolt, but it is to be understood it is not in anywise limited to this application.

1 indicates a bolt, formed at one end with a cup 2, and communicating with the latter is a grease outlet or duct 3, which communicates with a groove l formed in the periphery of the stem of the bolt.

5 indicates a cap having a smooth inner surface, and fitting over the cup 2. At the bottom of the cap is secured one end of a concentrically disposed coil spring 6. The distance between the various coils of spring 6 is somewhat smaller than the section of a projection 7 radially extending inside from the hollow bolt head 2 and engaging the spring coils in proportion as the cap 5 is screwed on the bolt head 2.

In Fig. l, the projecting pin 7 is formed by means of a pin riveted at the wall of the Speciiication of Letters Patent.

Patented Jan. 12, 1915.

Serial No. 802,780.

bolt head. In Fig. 3 said projection 7 is obtained by stamping a metal strip out of the wall'of the bolt head and bending said strip toward the center.

The working of the above described bolts is as follows. Cap 5 is slipped over the bolt head and rotated so that the coil spring 6 engages the projection 7. The coils of said spring engage said projection so that the cap cannot move back. The bolt shown in Fig. diii'ers from the above described ones in that the spring 6 instead of being secured to the cap, is secured at the bottom of the bolt head, while the projection 7 is secured on the cap. The working of the latter bolt is like that of the foregoing ones.

The advantages of the improved lubricating bolt consist in that it may be constructed in a very simple and easy way and is cheap. No turning nor adjusting is required and the cap is automatically secured in any position on the bolt head.

Having now fully described my said invention what I claim and desire to secure by Letters Patent, is:

l. In a lubricator, the combination of a cup element formed with a grease outlet, a cap element slidably fitted on the cup element, a spring secured to one of said elements, and a member carried by the other of said elements and adapted to slide between adjacent coils of the spring.

2. In a lubricator, the combination of a cup formed with a grease outlet, a cap slidably mounted on the cup, a spring secured to the cap, and a projection extending from the cup and adapted to slide between adjacent coils of the spring.

8. In a lubricator, the combination of a cup having a lug punched therefrom and extended inwardly, a cap fitting on the cup, and a coil spring secured to the cap and extending into the cup, the lug on the cup engaging between adjacent coils of the spring.

In testimony whereof I have hereunto set my hand in presence of two witnesses.

JOSEPH BSKENS.

Witnesses:

G. HOLTERMAN, CHARLES A. JOHNSON.

copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

